Question

i’m trying to sum some values in a form, i have not managed to get anywhere:

As you can see, there are 3 checkboxes, 3 radio buttons and 1 select dropdown

i need to sum the selected checkboxes, multiply by one of the radio values and sum at the end the value from the selected box. Have no clue on how to do it :/

Can i save the result in an object? not a json object but javascript

<div class="reciright">
        <form id="formi">
        <div class="recil">
            <span class="ltitle">Extras incluídos:</span>
            <div class="recheck"><input class="acc1" type="checkbox" name="vehicle" value="0.4" /> Caixa original</div>
            <div class="recheck"><input class="acc2" type="checkbox" name="vehicle" value="1" /> Cabo e carregador</div>
            <div class="recheck"><input class="acc3" type="checkbox" name="vehicle" value="3" /> Auscultadores</div>

            <span class="ltitle">Estado Geral:</span>
            <div class="recheck"><input type="radio" name="vehicle" value="0.5" /> 100% Funcional</div>
            <div class="recheck"><input type="radio" name="vehicle" value="0.4" /> Funcional mas não a 100%</div>
            <div class="recheck"><input type="radio" name="vehicle" value="0.3" /> Avariado</div>


        </div>

        <div class="recir">
            <span class="ltitle">Dados do Equipamento:</span>
            <div class="recampos">N.de Serie</div> <input class="inputix" type="text" name="fname" id="nserie">
            <p><div class="recampos">Modelo:</div><select class="selectit" id="modelo">
            <option value="50">iPad 2 wifi</option>
            <option value="20">iPad 1</option>
            <option value="10">iPad 2</option>
            <option value="1">iPad 3</option>
        </select></p>

            <div class="recampos2">Breve descricao do equipamento</div>
            <textarea rows="3" cols="50" class="recitextarea"></textarea>

        </div>
        <div class="icecream"></div>
        </form>
    </div>

Answer 1

Something like this maybe:

$("#modelo, [type='checkbox'], [type='radio']").on('change', function() {
    var boxvalue = 0,
        boxes = $("[type='checkbox']", "#formi").filter(':checked'),
        radios = parseFloat($("[type='radio']").filter(':checked').val()) || 1,
        dropdown = parseFloat($("#modelo").val()) || 1;

    $.each(boxes, function() {
        boxvalue+=parseFloat(this.value)||0;
    });

    var sum = (boxvalue * radios) * dropdown;

    $("#nserie").val(sum);
});

FIDDLE
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